JP2021520325A - Methods and equipment for supplying and expanding expandable slit sheet material - Google Patents

Abstract

The device that expands and supplies the expandable slit sheet paper includes a pair of support members for the roll of the expandable slit sheet paper. The roll of the expandable slit sheet paper has an inner core member and a roll of the expandable slit sheet paper wound around the inner core member. The inner core member has an axial length larger than the width of the slit sheet paper wound around the inner core member, and has an end region extending beyond the roll of the expandable slit sheet paper. A pressure means is provided that presses the first end region against the core support member to apply frictional rotation resistance to the core member end region.

Description

The present invention relates to the use of a tension device that fits into a bar and yoke to supply an expanded slit sheet material.

[Cross-reference of related applications]
Further information on the paper, slit pattern and expansion process that can be used in the present invention is provided in Patent Document 1, Patent Document 2, Patent Document 3, Patent Document 4, Patent Document 5, Patent Document 6, Patent Document 7, Patent Document 8, It is described in Patent Document 9, Patent Document 10, Patent Document 11, Patent Document 12, Patent Document 13, Patent Document 14, Patent Document 15, Patent Document 16 and Patent Document 17, and the full text of these disclosures is detailed. As such, it is incorporated herein by reference.
[Priority data claimed by the applicant]
This application claims the benefit of Provisional Application No. 62/664698, filed April 30, 2018, the disclosure of which is incorporated herein by reference in its entirety. be.

This application is a partial continuation of US Patent Application Nos. 15 / 428,144 (US Patent Application Publication No. 2018/0222665) filed on February 8, 2017, and is November 22, 2017. A partial continuation of US Patent Application No. 15 / 820,514 (US Patent Application Publication No. 2018/0127197 (A1)) filed on a date and filed on March 1, 2019. US Patent Application No. 16/29016 is a partial continuation application, the disclosures of which are incorporated herein by reference in full detail.

There are numerous electric devices for power supply that supply extended slit sheet material, as well as manual devices that provide tensioning methods. For example, Geami WrapPak® ExBox is a combination of self-sufficient, disposable and recyclable die-cut kraft paper and thin interleaving paper, which provides cushioning and protection during transport of fragile items. It's being used.

U.S. Pat. No. 5,538,778 U.S. Pat. No. 5,667,871 U.S. Pat. No. 5,688,578 U.S. Pat. No. 5,782,735 U.S. Pat. No. 3,908,071 U.S. Patent Application No. 14/901977 International Publication No. 1984002936 (A1) U.S. Patent Application Publication No. 2002/0060034 U.S. Patent Application Publication No. 2007/0240841 (A1) U.S. Pat. No. 3,104,197 U.S. Pat. No. 3,220,116 U.S. Pat. No. 3,266,972 U.S. Pat. No. 3,269,393 U.S. Pat. No. 3,908,071 U.S. Pat. No. 6,024,832 U.S. Pat. No. 6,458,447 (B1) U.S. Pat. No. 6,712,930 (B2)

Preferred embodiments overcome problems in the above and / or other background techniques.

A further important object of some preferred embodiments of the present invention is to produce a lightweight expanded slit sheet made from paper by a paper feeder provided for expansion of slit sheet paper.

According to a wide range of embodiments of the present invention, there is provided a feeder for expanding slit paper, which allows a roll of slit sheet material to be installed inside the roll of slit sheet material without removing any parts when changing each roll. ..

According to an embodiment of the present invention, there is provided a device for expanding and supplying expandable slit sheet paper. The device comprises a roll of expandable slit sheet paper, the roll of expandable slit sheet paper has an inner core member that is preferably hollow, and the roll of expandable slit sheet paper is wrapped around the inner core member. The inner core member has an axial length larger than the width of the slit sheet paper wound around the inner core member, and at least covers the end region of the first inner core member extending beyond the roll of the expandable slit sheet paper. The device is equipped with an expansion / supply device, and the expansion / supply device presses the first core support member, the second core support member, and the end region of the first inner core member against the first core support member. It has a first means and a second means for variably applying frictional rotation resistance to the end region of the first inner core member. The first end region of the inner core member is mounted on the first core support member, and the second end region of the inner core member is mounted on the second support member.

According to another embodiment of the present invention, the expansion / supply device has a first core support member. The roll of the expandable slit sheet paper has an inner core member and a roll of the expandable slit sheet paper wound around the inner core member. The inner core member has a shaft length larger than the width of the slit sheet paper and has a first inner core member end region extending beyond the roll of the expandable slit sheet paper. The first core support member is attached to the first side wall member and is positioned inside the first end region of the first inner core member. The inner core member is preferably hollow. The rotation resistance member is supported by the first side wall member and extends from the first side wall member to a position where it contacts the surface of the end region of the first inner core member extending beyond the roll of the expandable slit sheet paper. You may.

According to another embodiment of the present invention, the expansion / supply device has a first core support member. The roll of the expandable slit sheet paper has an inner core member and a roll of the expandable slit sheet paper wound around the inner core member. The inner core member has a shaft length larger than the width of the slit sheet paper and has a first inner core member end region extending beyond the roll of the expandable slit sheet paper. The first core support member is attached to the first side wall member and is positioned outside the first end region of the first inner core member. The rotational resistance member is advantageously supported by the first side wall member and is in contact with the surface of the first inner core member end region extending from the first side wall member beyond the roll of expandable slit sheet paper. Until then. Preferably, the first core support member has a first surface in contact with the surface of the end region of the first inner core member and has a bow-shaped structure. Advantageously, the arched structure has a curved portion that cooperates with a curved portion on the outer surface of the first inner core member end region. The first surface of the first core support member has a radius larger than the radius of the first inner core member and an arc of less than 240 ° so that the tension rod can come into contact with the first inner core member. Preferably, the arched structure has an arc of at least 180 °.

According to another embodiment of the present invention, the expansion / supply device has a first core support member and a second core support member. The roll of the expandable slit sheet paper has an inner core member and a roll of the expandable slit sheet paper wound around the inner core member. The inner core member has an axial length larger than the width of the slit sheet paper, and has a first inner core member end region and a second inner core member end region extending beyond the roll of the expandable slit sheet paper. And have. The first core support member is attached to the first side wall member and is positioned outside the first end region of the first inner core member. The rotational resistance member is advantageously supported by the first side wall member and is in contact with the surface of the first inner core member end region extending from the first side wall member beyond the roll of expandable slit sheet paper. Until then. Preferably, the first core support member has a first surface in contact with the surface of the end region of the first inner core member and has a bow-shaped structure. Advantageously, the arched structure has a curved portion that cooperates with a curved portion on the outer surface of the first inner core member end region. The first surface of the first core support member has a radius larger than the radius of the first inner core member and an arc that provides an opening area sufficient for the friction means to contact the end region of the first inner core member. Have. The radius of the first core support member is sufficiently larger than the radius of the first inner core member so that the first inner core member can be inserted into the first core support member. Further, the arc is less than about 300 °, preferably 240 ° or less, so that the tension rod can come into contact with the first inner core member and the slit sheet material can be easily loaded into the expansion machine / supply device. Is. Preferably, the second core support member has a first surface in contact with the surface of the end region of the second inner core member and has a bow-shaped or circular structure. Advantageously, the arched structure has a curved portion that cooperates with a curved portion on the outer surface of the second inner core member end region. The first surface of the second core support member has a radius larger than the radius of the second inner core member and an arc of less than 180 °. Preferably, the arched structure has an arc of 180 ° to 110 °. In the embodiment in which the second core support member has a bow-shaped structure of about 180 ° or less, the second inner core member is lifted from the second core support member, and a roll of expandable slit sheet paper is rotated around the first core support member. It can be separated from the expansion / supply device. On the other hand, by inserting the first inner core member into the first core support member, the roll of the expandable slit sheet paper, which is rotated around the first core support member and separated from the expansion / supply device, is formed. When rotated around the first core support member, the second inner core member is positioned on the second core support member. When the second inner core member is positioned on the second core support member, the second inner core member comes into contact with the second inner core member and is arranged on the second inner core member.

According to a further embodiment of the present invention, the expansion / supply device is provided with friction means for variably applying frictional resistance to the rotation of the core member. The device includes a first wall member and a first core support member fixed to the first wall member. The core support member supports the end region of the inner core member of the roll of expandable slit sheet paper wound around the inner core member. The end of the inner core member extends axially beyond the roll of expandable slit paper. The friction means can variably apply frictional resistance to the rotation of the inner core member by applying a variable pressure to the surface of the end region of the inner core member. The first wall member is preferably sheet metal, most preferably aluminum or steel. The second wall member is preferably sheet metal and most preferably steel. The first and second wall members may be fixed together by a plurality of rods or rods in a separated relationship. Preferably, the inner core member extends the width of the roll of slit sheet paper beyond the roll of slit sheet paper by at least 1 inch (2.54 cm). Most preferably, any end region of the inner core member extends beyond the width of the roll of slit sheet paper by at least 1 inch (2.54 cm). Advantageously, each end region of the inner core member has a roll width of the slit sheet paper of at least 1 inch (2.54 cm) and 1.5 inches (3.81 cm) from the roll of the slit sheet paper. ) Is extended beyond.

According to another embodiment of the present invention, there is provided a device for expanding and supplying expandable slit sheet paper. The device includes a roll of expandable slit sheet paper having an inner core member and a roll of expandable slit sheet paper wrapped around the inner core member. The inner core member has an axial length larger than the width of the slit sheet paper wound around the inner core member, and at least has a first inner core member end region extending beyond the roll of the expandable slit sheet paper. .. The device rubs against the first core support member, the second core support member, the first means of pressing the end region of the first inner core member against the first core support member, and the end region of the first inner core member. It further includes an expansion / supply device having a second means for variably adding rotational resistance. The first end region of the inner core member is mounted on the first core support member. The expansion / supply device may have a second end region of the inner core member mounted on the second support member.

According to another embodiment of the present invention, the expansion / supply device has an expandable slit sheet paper having a first core support member and a roll of the inner core member and the expandable slit sheet paper wound around the inner core member. Has a roll of. The inner core member has a shaft length larger than the width of the slit sheet paper and has a first inner core member end region extending beyond the roll of the expandable slit sheet paper. The first core support member is attached to the first side wall member and is positioned outside the first end region of the first inner core member to at least partially surround the end region of the first inner core member. The tension member applies a force to the first end region of the first inner core member to press the first end region of the first inner core member against the first core support member.

According to a further embodiment of the present invention, a means for variably applying frictional resistance to the rotation of the core member is fixed to the first wall member. The first core support member is fixed to the first wall member, and the elongated member is pivotally connected to the first wall member.

According to still another embodiment of the present invention, the present invention comprises a method of mounting a roll of expandable slit sheet paper on an apparatus for expanding and supplying the expanded slit sheet paper. Has a first core support member attached to the first side wall member and a second side wall member. The roll of the expandable slit sheet paper has an inner core member and a roll of the expandable slit sheet paper wound around the inner core member. The inner core member has a shaft length larger than the width of the slit sheet paper and has a first inner core member end region extending beyond the roll of the expandable slit sheet paper. The end region of the second inner core member extending beyond the roll of the expandable slit sheet paper rotates around the first core support member and comes into contact with the second core support member region in the second side wall member. In the state of being arranged above, the first core member end region is brought into contact with the first core support member, and the first core support member is moved into the first inner core member end region of the first inner core member. By inserting, the first core support member is positioned inside the first inner core member end region of the first inner core member.

According to a further embodiment of the present invention, the present invention includes a method of mounting a roll of expandable slit sheet paper on a device that expands and supplies the expanded slit sheet paper. The expansion / supply device has a first core support member attached to the first side wall member and a second side wall member attached to the first side wall member. The roll of the expandable slit sheet paper has an inner core member and a roll of the expandable slit sheet paper wound around the inner core member. The inner core member has a shaft length larger than the width of the slit sheet paper, and each extends beyond the roll of the expandable slit sheet paper, the first inner core member end region and the second inner core member end. It has a part area. The end region of the second inner core member rotates around the first core support member from a position separated from the second core support member, comes into contact with the second core support member of the second side wall member, and is arranged on the second core support member. In this state, the end region of the first inner core member is brought into contact with the first core support member, and the end region of the first inner core member of the first inner core member is inserted into the first core support member. By arranging it on the first core support member of the first side wall member, the first core support member is positioned outside the end region of the first inner core member of the first inner core member.

According to still another embodiment of the present invention, the present invention comprises a method of mounting a roll of expandable slit sheet paper on an apparatus for expanding and supplying the expanded slit sheet paper. Has a first core support member attached to the first side wall member and a second side wall member. The roll of the expandable slit sheet paper has an inner core member and a roll of the expandable slit sheet paper wound around the inner core member. The inner core member has a shaft length larger than the width of the slit sheet paper, and has a first inner core member end region and a second inner core member end region extending beyond the roll of the expandable slit sheet paper. Has. The device includes a long frictional resistor that is pivotally connected to a side wall support member. The first inner core member end region is elongated in a state where the second inner core member end region is rotated and is arranged in contact with the second core support member region in the second side wall member. By being arranged under the frictional resistance material and making support contact with the first core support member, the end region of the first inner core member of the first inner core member is supported by the first core attached to the first side wall member. It is positioned with a support relationship with the member. By pulling out the slit sheet paper against the resistance of the long frictional resistance material, the slit sheet paper is supplied and the expandable slit sheet paper is expanded.

Preferred embodiments of the present invention are described in the context of the accompanying drawings by way of example rather than limitation.

FIG. 1 is a perspective view of a supply / expansion device and a tension device. FIG. 2 is a perspective view of a supply / expansion device, a tension device, and a paper roll loaded in the supply / expansion device. FIG. 3 is a side view of the supply / expansion device, the tension device, and the paper roll loaded in the supply / expansion device. FIG. 4 is a perspective view of a tension device in which the paper roll is positioned at an angle to the supply / expansion device in order to load the paper roll into the supply / expansion device. FIG. 5 is a perspective view of a paper roll wound around a hollow core member. FIG. 6 is a perspective view of the supply / expansion device of FIG. FIG. 7 is a partial end view of the long inner core member mounted in the core support member. FIG. 8 is a side view of the supply / expansion device in which the end portion of the long inner core member of the paper roll is mounted in the core support member. FIG. 9 is a partial end view of an alternative embodiment of the long inner core member mounted in the core support member.

[Definition of preferred embodiments]
For the purposes of the present invention, the expression "paper roll" means a slit sheet material wrapped around a paper core wider than the slit sheet material.

For the purposes of the present invention, the expression "movably connected" is a structure such as a metal part, which is fastened to another structure so that its end faces the pivot end. It means that the structure is movable to various positions and its unsupported end includes a cantilever member that is sufficiently flexible to move to various positions.

For the purposes of the present invention, the expression "yoke" means a structure shaped or formed to support a load.

For the purposes of the present invention, the expression "rod" is a straight (metal) part that is longer than its width, hard enough to be hung in an opening such as in a yoke, and extended. Possible slit means a part that functions as a lever for applying force to the outer surface of the outer part of the inner core of a roll of paper. The expression "rod" includes thin rods, poles, rods, shafts, stanchions, and beams.

For the purposes of the present invention, the expression "core support member" is a structure that contacts the outer end and is wound around the core member by supporting the weight from below or inside the hollow core member. It means a structure that supports the weight of roll paper.

For the purposes of the present invention, the expression "paper core" means a round paper tube wrapped with expandable slit sheet paper.

For the purposes of the present invention, the expression "curved portion" means an essentially circular or arched structure formed or curved like an arc or bow.

For the purposes of the present invention, the expression "tension mechanism" means a pressure assembly that applies pressure to the outer edge of a paper core to variably increase or decrease friction.

For the purposes of the present invention, the expression "attached" refers to wood, wood composites to make bolted, screwed, fixed, fastened or sealed assemblies. , Like the technique of assembling metal or plastic, means fixing one part firmly to another, including permanent assembly and disassembleable structures.

For the purposes of the present invention, the phrase "extending beyond the edge of a paper roll" means that the end of the elongated core member projects beyond the edge of the paper roll.

For the purposes of the present invention, the expression "horizontal" means parallel to the horizontal plane.

For the purposes of the present invention, the expression "tilted" means that the tilt or tilt forms an angle with respect to the horizontal plane.

For the purposes of the present invention, the expression "biased" means a fixed weighting factor applied to a roll of expandable slit paper so as to tilt towards the first core member of the tension mechanism. ..

It is an object of the design of the present invention to eliminate the loss of parts due to periodic removal, and to save labor in removal and installation.

The tension device in its preferred embodiment is made of aluminum, but may also be made of wood or steel. Tension devices, specifically tension rods, springs and thumbscrews, are described in U.S. Patent Application No. 15 / 428,144 (the disclosure of which is incorporated herein by reference in its entirety. It has the same design as that described in Publication No. 2018/0222665). The new technology uses a short bar on the tension side and a yoke on the opposite side. This combination allows paper to be loaded without the need to remove tension rods, thumbscrews, and springs.

FIG. 1 is a perspective view of the entire tension assembly and feed structure 100, not including rolls of expandable slit paper. The tension assembly is mounted on the side fixture 101. The tension assembly includes a tension member 103, a thumbscrew 104, and a spring 105. The tension member 103 may be in the form of a rod or a bar member. The tension assembly presses the core end region 203 (shown in FIGS. 3 and 4) against the core support 102 in the form of a support rod fixed or attached to the fixture 101. Thereby, tension, that is, rotational resistance, is applied to the paper core 204 (shown in FIG. 5). The side fixture 106 supports the inner core end region.

The tension assemblies 103, 104 and 105 of FIG. 1 have the same basic design as those disclosed in US Patent Application No. 15 / 428,144 (US Patent Application Publication No. 2018/0222665). On the opposite side of the side fixture 101, as shown in FIG. 2, the paper core end region 201 is supported at the bottom of the yoke region 107. In this way, the paper core end region 201 is arranged in the yoke region 107 of the side fixture 106. After the paper is loaded, the paper core end region 201 is fixed by the core positioning member 108 that restrains the paper roll 201 in FIG. 2, thereby suppressing the end core region 201 from slipping on the core support member 102. can.

FIG. 2 is a perspective view of a tension system loaded with a paper roll 200. As shown in FIGS. 2 and 3, the end region 201 of the paper core 204 is arranged in the yoke region 107, and the positioning member 208 is a bent metal member attached to the side fixture 106.

FIG. 3 is a front view of an angled alternative design in which the paper roll 200 is slightly angled with respect to the horizontal pedestal shown by line 300. This orientation relationship is illustrated by a horizontal line 301 parallel to the horizontal line 300. The space 303 between the paper roll 200 and the horizontal alignment line 301 is smaller than the space 302. This relationship is realized by the bottom of the yoke region 107 of FIG. 1 being higher than the bottom of the core end 203 located on the support rod 102 of FIG. The wire 300 indicates the upper surface of the horizontal base in which the paper core end portion 203 is positioned lower than the position of the core end portion 201 on the yoke 107 by the support rod 102 of the fixture 101. Arrow 304 indicates a yoke 106 that is higher than the fixture 101 so that the paper roll 200 is angled with respect to the top surface of the horizontal table.

As shown in FIGS. 1, 4 and 6, the yoke 102 is not drawn in FIG. 3 because it has the form of a support rod member positioned inside the paper core end portion 203. The cylindrical paper core member 204 is suspended from, that is, supported by the yoke region 107 and the support rod 102 of the frame 106 in the outer end regions 201 and 203, respectively.

As shown in FIG. 1, the thumbscrew 108 moves upward in the direction of the paper core end region 201 so as to stop the lateral movement of the paper core end region 203 away from the support rod 102 and the fixture 101. It may be screwed.

Also, as shown in FIG. 3, in addition to or as an alternative to using thumbscrews to position the paper, it has a yoke region 107 positioned above the core support 102. A slightly angled paper roll is provided to use gravity to keep the paper on the tension side of the device. Due to the angle of the paper roll 200, the paper roll is urged toward the tension member 103 and the fixture 101. When the tension device is firmly secured and the paper is loaded, it functions as described in US Patent Application No. 15 / 428,144. A thumbscrew 310 located on the outside of the yoke may be screwed upward after the paper roll has been attached to prevent the paper from slipping outwards away from the tension side of the device.

FIG. 4 shows a method of mounting the paper roll 200 on the tension / supply system 100. The paper roll is positioned at an angle to the supply / expansion device so that the paper roll is loaded into the supply / expansion device. As shown in FIGS. 1, 3 and 6, the core support member 102 is inserted into the hollow cylindrical core member 204, and the paper core end portion 203 and the paper core end region 201 have curved arrows 410. As shown, by rotating the roll 200 around the core support portion 102, the roll 200 descends to a position in the yoke region 107 of the fixture 101.

FIG. 5 is a perspective view of the paper roll 200 showing the hollow inner core member 204. Since the inner core 204 is longer than the width of the paper roll 200, the inner core 204 has two outer ends 201 and 203 extending beyond the end of the paper roll 200. The outer end 203 provides a friction surface and, in combination with the tension member 103, functions to resist withdrawal of the slit paper from the paper roll 200. The core member 204 may be any hard material such as metal or plastic, but paper is particularly preferred.

FIG. 6 is a perspective view of the supply / expansion device of FIG. As shown in FIG. 3, the support rod 102 of the fixture 101 positions the paper core end 203 lower than the position of the core 201 on the yoke 107. The yoke of the fixture 106 supports the core end portion 201 at a position higher than the core support portion 102 that supports the core member 204, so that the paper roll 200 is angled with respect to the upper surface of the horizontal table. ..

FIG. 7 is a partial end view of the long inner core member 201 mounted in the core support member 400. The first core support member 400 has a radius larger than the radius of the first inner core member 203 and an opening sufficient for the friction means as shown in FIG. 7 to come into contact with the surface of the first inner core member end region 203. It has an arc that provides a region. The radius of the first core support member is sufficiently larger than the radius of the first inner core member so that the first inner core member can be inserted into the first core support member.

FIG. 8 is a side view of the supply / expansion device in which the end portion of the long inner core member of the paper roll is mounted in the core support member. The arc of the core support member 400 is less than about 300 °, preferably 240 ° or less, so that the tension rod 103 can come into contact with the outer surface of the first inner core member 203.

Preferably, the second core support member 900 has a first surface in contact with the surface of the second inner core member end region 201 and has an arched structure as shown in FIG. Advantageously, this arched structure has a curved portion that cooperates with a curved portion on the outer surface of the second inner core member end region. The outer surface of the second core support member 900 has a radius larger than the radius of the second inner core member, and preferably has an arc of less than 180 °. Most preferably, the arched structure has an arc of 180 ° to 110 °. In the embodiment in which the second core support member 900 has a bow-shaped structure of about 180 ° or less, the second inner core member 201 is lifted from the second core support member 400, and the roll of expandable slit sheet paper is rolled into the first core support member. It can be rotated around 900 to separate it from the expansion / supply device. Similarly, the paper roll can be positioned in the expansion machine / feeder in which the first inner core member 203 is inserted into the support member. The roll 200 of the expandable slit sheet paper rotates around the first core support portion 400, and the second inner core member 203 is lowered onto the core support member 900. Then, the paper roll 200 is brought into a position where it is pulled out from the expansion / supply device.

The use of individual numbers is described as an approximation, preceded by the expressions "about," "substantially," or "approximately." Similarly, the values in the various ranges set forth in this application are "approx.", "Substantially", or "approximate" for any of the minimum and maximum values within the stated range, unless otherwise stated. Is described as an approximate value as preceded by the expression. In this way, it is possible to obtain substantially the same result as the value within the range even for the change that becomes larger or smaller than the range described. As used herein, the expressions "about," "substantially," and "approximately" when referring to numbers relate to the technology or scope or element most relevant to the subject matter of the disclosure. It shall have a simple and ordinary meaning to those skilled in the art. The extent to which it can be expanded from a strict numerical boundary depends on various factors. For example, some of the possible factors include the significance of the element and / or the effect of a predetermined amount of change on the performance of the subject matter of the claim, and other considerations known to those of skill in the art. Using different significant digits for different numbers, as used herein, is how a particular number or by using the expression "approximately," "substantially," or "approximately." It does not mean limiting whether the scope is expanded. In this way, "about", "substantially" or "approximately" expands the numerical value as a general matter. Also, range disclosure is a continuous range that includes all values between the minimum and maximum values, as well as the range obtained by using the expressions "about," "substantially," or "approximately." Intended as an expansion of. As such, the description of a range of numbers herein is intended merely as a concise way to refer to each individual number within the range individually, unless otherwise stated. , As described individually herein, are incorporated herein by reference. Determining a given amount of change in several factors, such as the significance of the slit pattern, the difference in paper width before and after expansion, the weight and type of paper, and the technology or subject most relevant to the subject of disclosure. If it is not considered within the ability of one of ordinary skill in the art to determine that other considerations known to those of ordinary skill in the art relating to the scope or element affect the performance of the subject matter of the claim, or are not specified in the claims. It should be understood that the expressions "about", "substantially" and "approximately" mean plus or minus 15% of the numbers.

Further embodiments of the present disclosure are set forth by any range, ratio and range of ratios arising out of or derived from any data disclosed herein, which are disclosed herein as specified. It will be understood that it is included in a part of. This includes ranges that can be formed to include or not include finite upper and / or lower bounds. Thus, it will be appreciated by those skilled in the art that are most closely related to a particular range, ratio and range of ratios, that these values can be clearly derived from the data presented herein. There will be.

The device that expands and supplies the expandable slit sheet paper includes a pair of support members for the roll of the expandable slit sheet paper. The roll of the expandable slit sheet paper has an inner core member and a roll of the expandable slit sheet paper wound around the inner core member. The inner core member has an axial length larger than the width of the slit sheet paper wound around the inner core member, and has an end region extending beyond the roll of the expandable slit sheet paper. A pressure means is provided that presses the first end region against the core support member to apply frictional rotation resistance to the core member end region. The roll of expandable slit sheet paper is formed by positioning one end region under the pressure means in a supportive relationship with the core support member in a state where the roll of expandable slit sheet paper is tilted with respect to the device. , Mounted on the device. Then, the other end region moves into the support position together with the core support member. By applying an adjustable downward pressure to the paper core end region, the paper core end region is pressed against the support member in the same manner as the paper is pulled. The downward pressure creates the friction required to allow the unexpanded slit sheet to be unwound and fed while simultaneously expanding.

Claims (18)

Expandable slit sheet A device for expanding and supplying paper.
1st core support member and
2nd core support member and
A roll of expandable slit sheet paper
Inner core member and
It has a roll of expandable slit sheet paper wrapped around the inner core member.
The end portion of the first inner core member having an axial length larger than the width of the slit sheet paper wound around the inner core member and extending beyond the roll of the expandable slit sheet paper. Have at least an area
A roll of expandable slit sheet paper in which the first end region of the inner core member is supported by the first core support member, and
A device including a first means for pressing the end region of the first inner core member against the first core support member to apply frictional rotation resistance to the end region of the first inner core member. Further comprising the inner core member having a second end region projecting beyond the roll of the expandable slit paper.
The device of claim 1, wherein the second end region is supported by the second support member. The first end region of the inner core member projects beyond the roll of the expandable slit sheet paper and is mounted on the first core support member.
The device according to claim 2, wherein the second end region of the inner core member projects beyond the roll of the expandable slit sheet paper and is mounted on the second support member. The first end region of the inner core member projects beyond the roll of the expandable slit sheet paper and is mounted in the first core support member.
The device according to claim 2, wherein the second end region of the inner core member projects beyond the roll of the expandable slit sheet paper and is mounted on the second support member. Further comprising the hollow first inner core member having a first end region projecting beyond the roll of the expandable slit sheet paper.
The device according to claim 2, wherein the first end region is positioned on the first core support member. Further comprising the hollow first inner core member having a first end region projecting beyond the roll of the expandable slit sheet paper.
The device according to claim 2, wherein the first core support member is positioned within the first end region. The first means, which presses the end region of the first inner core member against the first core support member and applies frictional rotation resistance to the end region of the first inner core member,
1st wall member and
The first core support member fixed to the first wall member and
The device according to claim 1, further comprising an elongated member that is pivotally connected to the first wall member and is positioned so as to variably contact the end region of the first inner core member. With spring means
With the elongated member having a threaded insert,
The device of claim 7, further comprising a screw that is rotatable through the spring so that the elongated member changes the frictional resistance applied to the first end region of the inner core member. 1 The device described in. The claim further comprises a second end region of the inner core member extending the width of the roll of slit sheet paper beyond the roll of slit sheet paper by at least 1 inch (2.54 cm). 9. The device according to 9. Each end region of the inner core member extends beyond the width of the roll of slit sheet paper by at least about 1 inch (2.54 cm) and 1.5 inches (3.81 cm). The device according to claim 10, further comprising. The first end region of the inner core member has a circular shape, projects beyond the roll of the expandable slit sheet paper, and is mounted in the first core support member.
The first core support member has a bow-shaped inner surface, and the bow-shaped inner surface has a radius larger than the outer radius of the end region of the inner core member.
The device according to claim 2, wherein the long member comes into contact with the first end region of the inner core member because the bow-shaped inner surface has an arc of less than about 300 °. 12. The device of claim 12, wherein the arched inner surface has an arc of less than about 240 ° and greater than 180 ° so that the tension rod can come into contact with the first inner core member. A method of mounting a roll of expandable slit sheet paper on the expansion / supply device of claim 2.
A step of bringing the end region of the first inner core member into contact with the first core support member,
With the second inner core member end region extending beyond the roll of the expandable slit sheet paper positioned on the second core support member, the first inner core member end region is referred to as the first. A step that is partially supported by a 1-core support member,
With the step of further supporting the end region of the first inner core member by the first core support member in a state where the end region of the second inner core member is brought into contact with the second core support member and arranged on the second core support member. ,
A step of completely mounting the first core support member on the end region of the first inner core member, and
The slit sheet paper is expanded by pulling out a roll of the expandable slit sheet paper of a certain length from the roll of the expandable slit sheet paper while applying frictional rotation resistance to the end region of the first inner core member. Methods, including steps. A long tension member pivotally connected to the support member and a spring are further provided, and the long member passes through the screw type insert and the spring and enters the screw type insert to enter the length. Has a screw to spring-fasten the shape member,
Further, a step of variably setting the frictional resistance with respect to the rotation of the core member by rotating the spring retaining screw and changing the frictional resistance applied to the end region of the first core member by the elongated member. The method of claim 14, comprising. The step of partially mounting the first inner core member end region on the first core support member partially inserts the first core support member into the first inner core member end region. Including the above, the step of completely mounting the first core support member on the first inner core member end region is to insert the first core support member into the first inner core member end region. 14. The method of claim 14, comprising completing. The step of partially mounting the first inner core member end region on the first core support member includes positioning the first inner core member end region under the elongated member, said. The second inner core member end region in which the step of completely mounting the one-core support member on the first inner core member end region extends beyond the roll of the expandable slit sheet paper is the second. The first is in a state where the paper roll is tilted with respect to the first core support member by moving to a position on the core support member and tilting the paper roll with respect to the horizontal. 14. The method of claim 14, comprising completing the insertion of the core support member into the first inner core member end region. The step of partially mounting the first inner core member end region on the first core support member includes positioning the first inner core member end region under the elongated member, said. The second inner core member end region in which the step of completely mounting the one-core support member on the first inner core member end region extends beyond the roll of the expandable slit sheet paper is the second. By moving to a position on the core support member and tilting the paper roll with respect to the horizontal, the paper roll tilts with respect to the first core support member and with respect to the first core support member. 14. The method of claim 14, comprising completing the insertion of the first core support member into the end region of the first inner core member while being urged.

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